Question

I have a long C function that can return at different lines. Is it possible to have GDB run through the function and print out on what line the function returned? So far I have been going through one line at a time (using n), and this is becoming tedious.

Can I dynamically call a function with GDB and know on which line it returned?

Answer 1

One nasty trick if you’re compiling with GCC and can edit the code would be to do a macro and search+replace all the returns in your editor…

int global_return_lineno;
#define return2(x) {global_return_lineno=__LINE__;return(x);}

Then call the function and inspect the global variable.